Qualified for Automotive Applications
1/2 VI Virtual Ground for Analog Systems
Micropower Operation . . . 170 μA Typ,
VI = 5 V
Wide VI Range . . . 4 V to 40 V
High Output-Current Capability
− Source . . . 20 mA Typ
− Sink . . . 20 mA Typ
Excellent Output Regulation
− −102 μV Typ at IO = 0 to −10 mA
− +49 μV Typ at IO = 0 to +10 mA
Low-Impedance Output . . . 0.0075 Ω Typ
Noise Reduction Pin

description
In signal-conditioning applications utilizing a
single power source, a reference voltage equal to
one-half the supply voltage is required for
termination of all analog signal grounds. Texas
Instruments presents a precision virtual ground
whose output voltage is always equal to one-half
the input voltage, the TLE2426 rail splitter.
The unique combination of a high-performance,
micropower operational amplifier and a precisiontrimmed
divider on a single silicon chip results in
a precise VO/VI ratio of 0.5 while sinking and
sourcing current. The TLE2426 provides a
low-impedance output with 20 mA of sink and
source capability while drawing less than 280 μA of supply current over the full input range of 4 V to 40 V. A
designer need not pay the price in terms of board space for a conventional signal ground consisting of resistors,
capacitors, operational amplifiers, and voltage references. For increased performance, the 8-pin package
provides a noise-reduction pin. With the addition of an external capacitor (CNR), peak-to-peak noise is reduced
while line ripple rejection is improved.
Initial output tolerance for a single 5-V or 12-V system is better than 1% over the full 40-V input range. Ripple
rejection exceeds 12 bits of accuracy. Whether the application is for a data acquisition front end, analog signal
termination, or simply a precision voltage reference, the TLE2426 eliminates a major source of system error.